<template>
   <view>
     <view class="search-box">
      <my-search @click="gotoSearch"></my-search>
     </view>
      <!-- 轮播图区域 -->
      <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
        <!-- 循环渲染轮播图的 item 项 -->
        <swiper-item v-for="(item, i) in swiperList" :key="i">
          <navigator  class="swiper-item" :url="'/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id">
            <!-- 动态绑定图片的 src 属性 -->
            <image :src="item.image_src"></image>
          </navigator>
        </swiper-item>
      </swiper>
      <!-- 分类导航区域 -->
      <view class="nav-list">
         <view class="nav-item" v-for="(item, i) in navList" :key="i" @click="navClickHandler(item)">
           <image :src="item.image_src" class="nav-img"></image>
         </view>
      </view>
      <!--楼层区域-->
      <view>
        <!--楼层 item 项-->
        <view class="floor-item" v-for="(item,i) in floorList" :key="i">
          <!--楼层标题-->
          <image :src="item.floor_title.image_src" class="floor-title"></image>
          <!-- 楼层图片区域 -->
          <view class="floor-img-box">
            <!-- 左侧大图片的盒子 -->
            <navigator class="left-img-box" :url="item.product_list[0].url">
              <image :src="item.product_list[0].image_src" :style="{width: item.product_list[0].image_width + 'rpx'}" mode="widthFix"></image>
            </navigator>
            <!-- 右侧 4 个小图片的盒子 -->
            <view class="right-img-box">
              <navigator class="right-img-item" v-for="(item2, i2) in item.product_list" :key="i2" v-if="i2 !== 0" :url="item2.url">
                <image :src="item2.image_src" mode="widthFix" :style="{width: item2.image_width + 'rpx'}"></image>
              </navigator>
            </view>
          </view>
        </view>
      </view>
    </view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  export default {
    mixins:[badgeMix],
    data() {
      return {
        //1.轮播图数据列表，默认为空数组
        swiperList:[],
        //2.分类导航的数据列表
        navList:[],
        //3.获取楼层数据列表
        floorList:[]
      };
    },
    onLoad(){
      //获取轮播图数据方法
      this.getSwiperList()
      //分类导航的数据列表
      this.getNavList()
      //楼层数据列表
      this.getFloorList()
      
    },
    methods:{
      async getSwiperList(){
        // 3.1 发起请求
        const {data : res} = await uni.$http.get('/api/public/v1/home/swiperdata')
        console.log(res)
        // 3.2 请求失败
        if(res.meta.status !== 200) return uni.$showMsg()
        this.swiperList = res.message
      },
      async getNavList() {
        const { data: res } = await uni.$http.get('/api/public/v1/home/catitems')
        console.log(res)
        if (res.meta.status !== 200) return uni.$showMsg()
        this.navList = res.message
      },   
      // nav-item 项被点击时候的事件处理函数
      navClickHandler(item) {
        // 判断点击的是哪个 nav
        if (item.name === '分类') {
          uni.switchTab({
            url: '/pages/cate/cate'
          })
        }
      },
      async getFloorList() {
       const {data:res} = await uni.$http.get('/api/public/v1/home/floordata')
       if(res.meta.status !== 200) return uni.$showMsg()
       
       //双层forEach循环，处理url地址
       res.message.forEach(floor=>{
         floor.product_list.forEach(prod=>{
           prod.url='/subpkg/goods_list/goods_list?' + prod.navigator_url.split('?')[1]
         })
       })
       this.floorList = res.message
      },
      gotoSearch() {
        uni.navigateTo({
          url: '/subpkg/search/search'
        })
      }
    }
  }
</script>

<style lang="scss">
  swiper{
    height: 330rpx;
  }
  .swiper-item,image {
    width: 100%;
    height: 100%;
  }
  .nav-list {
    display: flex;
    justify-content: space-around;
    margin: 15px 0;
  
    .nav-img {
      width: 128rpx;
      height: 140rpx;
    }
  }
  
  .floor-title{
    height: 60rpx;
    width: 100%;
    display: flex;
  }
  
  .right-img-box {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
  }
  
  .floor-img-box {
    display: flex;
    padding-left: 10rpx;
  }
  .search-box {
    // 设置定位效果为‘吸顶’
    position: sticky;
    // 吸顶的位置
    top: 0;
    // 提高层级防止被轮播图覆盖
    z-index: 999;
  }
</style>
